CA77 Dream Carb Maintenance Walk-Through

[rustywrench]

Q-1 yes
q-2 you adjust the float height by bending the brass tang that depresses the valve button.
Your pic shows the measurement from carb body to top of the float but unless I'm mistaken that is actually to the top as it is held inverted. Someone slap me please if I'm wrong.
PS look deep inside that hole and there should be a jet in there. RW

[paperslammer]

Yes, the slow jet should be located in the orifice you've described.

PS look deep inside that hole and there should be a jet in there. RW

Ohhhh! I thought I was missing one. I'll check to see if it's hiding up there. Thanks for that tip!

And yes, you are correct that there should be a gasket between the carb and bowl which is apparently missing in your case.

Thanks! Is eBay the only place I can get this? It seems to be included in the Keyster 305 carb rebuild kit.

Incidentally, the float height adjustment dimension is from the TOP of the carb body, NOT the surface of the recess upon which the float bowl gasket bears.

Ok so this guy is wrong?

[teazer]

As the others have already commented, there should be a "rubber'' float bowl gasket there.

The other trick with setting float height is that it is correct when the tang is just starting to depress the spring loaded plunger in the center of the float valve needle.

It is much easier to clean and adjust on the bench than on the bike.

If you buy a Keyster carb kit, do not use the needle or the jets - they tend to not be to stock Honda sizes. Get jets from your local Honda dealer.

And the 26.5mm is from the other side of the float,ie the bottom. It's drawn as the top. I suspect you knew that already.

[brewsky]

The bowl gasket may be stuck to the top portion of the carb.

[brewsky]

"It is much easier to clean and adjust on the bench than on the bike. "

Amen to that!
There are also several small passages and openings in the carb body itself that need to be cleaned in addition to the jets themselves.
Especially the area under the slow jet and the small hole from it into the main opening.
Many shops have a carb cleaning machine and you might take the carb and have them clean it in the machine for a small charge.

[Loudo]

To answer your question "So is this guy wrong?" it seems we're mixing up a couple of things. The measurement is from the top of the carb body. It may be true that some gauges bear upon the gasket surface, as well they should, but I'm certain these gauges allow for this extra distance in their manufacture and still provide a visual for the proper height when in use. If anyone thinks I'm wrong on this, please speak up.

I would definitely believe what a Honda manual describes over what is depicted in a Clymer manual. Some sections of Clymer manuals were written by chimps.

I agree with those stating you should remove the carb and give it a thorough cleaning. There's really no way to avoid this as you need to closely examine the float bowl gasket bearing surface, perhaps scrape off an old gasket, and make it clean as a whistle. It also gives you the opportunity to become familiar with all the carb parts. It's an educational opportunity that shouldn't be missed and if you're going to own this bike for any length of time you're going to go there anyway. I'm inclined to think brewsky is correct and that your gasket is stuck on the carb body.

You can get by with Keyster gaskets by carefully trimming them with an X-Acto knife. You will do this once and after taking off the float bowl six times and trying to get the gasket to remain seated when replacing the float bowl while working upside down shortens your life by six months due to stress then you will buy Honda gaskets having benefitted from this lesson in frugality. Don't use any Keyster brass.

[paperslammer]

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